Daidzein is always added into poultry feed to make the production performance and immunity of poultry better. In this study, a total of 600 40-week-old Hy-Line variety brown layers were randomized into five groups and...Daidzein is always added into poultry feed to make the production performance and immunity of poultry better. In this study, a total of 600 40-week-old Hy-Line variety brown layers were randomized into five groups and fed with a corn-soybean-mixed basal diet supplement with 0, 10, 50, 100, and 500 mg · kg^-1 daidzein, respectively. Then, two PCR-based typing methods（RAPD-PCR and ERIC-PCR） were combined to analyze the ileum content and explore the changes of ileum microflora biodiversity. The results of RAPD-PCR and ERIC-PCR showed that bands under 10 mg · kg^-1 and 50 mg · kg^-1 were the most, and their similarity was the largest. Bands under 500 mg · kg^-1 were the least and similarity with other groups was the minimum. Ileum microflora biodiversity under 10 mg · kg^-1 or 50 mg · kg^-1 was richer than that under 500 mg · kg^-1. A corn-soybean-mixed basal diet supplement with 10 mg · kg^-1 to 50 mg · kg^-1 of daidzein might be beneficial to Hy-Line variety brown layers intestinal bacteria.展开更多
[Objective] To observe differences in egg quality between Shandong local hens and Hyline brown hens. [Method] Hyline brown hens and three Shandong local chicken breeds including Jining Bairi chicken, Wenshang Luhua ch...[Objective] To observe differences in egg quality between Shandong local hens and Hyline brown hens. [Method] Hyline brown hens and three Shandong local chicken breeds including Jining Bairi chicken, Wenshang Luhua chicken and Laiwu black chicken were selected for egg quality comparison. [ Result] The pementage of yolk, egg-shape index and shell strength were significantly higher in the Shandong local hens than in Hyline brown hens ( P 〈 0.05), but the opposite results were found for average egg size and Haugh unit ( P 〈 0.05). The contents of essential amino acids and linoleic acid were significantly higher in the Shandong local hens than in Hyline brown hens (P 〈 0.05), but no significant differ- ence in VA content, VE content, total amino acid content and fatty acid content was found between the Shandong local hens than in Hyline brown hens. [ Conclustion] The study investigated the effects of chicken breeds on egg quality, which provides a reference for improvement of chicken breeds in future.展开更多
采用室内土柱淋溶模拟试验,研究相当于一年降雨条件下磷肥在棕壤土垂直方向上的淋溶迁移特征及鸡粪、秸秆对磷素迁移转化的影响。结果表明:土壤施肥量与速效磷、迟效态磷增加量呈极显著正相关,相关系数分别是0.991 41,0.997 74;水溶性磷...采用室内土柱淋溶模拟试验,研究相当于一年降雨条件下磷肥在棕壤土垂直方向上的淋溶迁移特征及鸡粪、秸秆对磷素迁移转化的影响。结果表明:土壤施肥量与速效磷、迟效态磷增加量呈极显著正相关,相关系数分别是0.991 41,0.997 74;水溶性磷、A l-P与土壤速效磷相关性最好,相关系数分别达0.972和0.926。250 0 m g/kg鸡粪与25 m g/kg磷肥配施能降低磷淋溶率,并能极显著提高土壤中速效磷的增加量,相当于单施50 m g/kg的磷肥;秸秆与磷肥配合施用在短期内对土壤磷素的有效性影响不大,但可以减少磷素向下层迁移。展开更多
基金Supported by the Science&Technology Department of Sichuan Province(2013FZ0014)the Construction Project of Postgraduate Academic Degree in Southwest University for Nationalities(2014XWD-S071007)the National Training Plan of Excellent Agricultural and Forestal Talents(2014)
文摘Daidzein is always added into poultry feed to make the production performance and immunity of poultry better. In this study, a total of 600 40-week-old Hy-Line variety brown layers were randomized into five groups and fed with a corn-soybean-mixed basal diet supplement with 0, 10, 50, 100, and 500 mg · kg^-1 daidzein, respectively. Then, two PCR-based typing methods（RAPD-PCR and ERIC-PCR） were combined to analyze the ileum content and explore the changes of ileum microflora biodiversity. The results of RAPD-PCR and ERIC-PCR showed that bands under 10 mg · kg^-1 and 50 mg · kg^-1 were the most, and their similarity was the largest. Bands under 500 mg · kg^-1 were the least and similarity with other groups was the minimum. Ileum microflora biodiversity under 10 mg · kg^-1 or 50 mg · kg^-1 was richer than that under 500 mg · kg^-1. A corn-soybean-mixed basal diet supplement with 10 mg · kg^-1 to 50 mg · kg^-1 of daidzein might be beneficial to Hy-Line variety brown layers intestinal bacteria.
基金funded by the Agricultural Stock Breeding Project of Shandong Province (2008LZ015)
文摘[Objective] To observe differences in egg quality between Shandong local hens and Hyline brown hens. [Method] Hyline brown hens and three Shandong local chicken breeds including Jining Bairi chicken, Wenshang Luhua chicken and Laiwu black chicken were selected for egg quality comparison. [ Result] The pementage of yolk, egg-shape index and shell strength were significantly higher in the Shandong local hens than in Hyline brown hens ( P 〈 0.05), but the opposite results were found for average egg size and Haugh unit ( P 〈 0.05). The contents of essential amino acids and linoleic acid were significantly higher in the Shandong local hens than in Hyline brown hens (P 〈 0.05), but no significant differ- ence in VA content, VE content, total amino acid content and fatty acid content was found between the Shandong local hens than in Hyline brown hens. [ Conclustion] The study investigated the effects of chicken breeds on egg quality, which provides a reference for improvement of chicken breeds in future.
文摘采用室内土柱淋溶模拟试验,研究相当于一年降雨条件下磷肥在棕壤土垂直方向上的淋溶迁移特征及鸡粪、秸秆对磷素迁移转化的影响。结果表明:土壤施肥量与速效磷、迟效态磷增加量呈极显著正相关,相关系数分别是0.991 41,0.997 74;水溶性磷、A l-P与土壤速效磷相关性最好,相关系数分别达0.972和0.926。250 0 m g/kg鸡粪与25 m g/kg磷肥配施能降低磷淋溶率,并能极显著提高土壤中速效磷的增加量,相当于单施50 m g/kg的磷肥;秸秆与磷肥配合施用在短期内对土壤磷素的有效性影响不大,但可以减少磷素向下层迁移。
